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This means indirect damage (cards that say player loses x life) count towards this objective

Grafted Skullcap Every day, I fight for my life and win

The win condition aspect is a little clunky, but the ability to trade two mana for a card carries this artifact and proves its importance in creature-based white decks

A card is considered functionally identical to another card if it has the same card type, subtypes, abilities, mana cost, power, and toughness

Apart from that, this can trade up for stuff in general

Coming into play tapped prevents most decks from wanting more than a couple to help curve out, but you only need one of two to get perfect mana in most cases